30-40mm 10W 100V 500mA NO Silver Tone Door Magnetic Sensor Switch Set Product Name : Door Magnetic Switch;Model : MC-52;Color : Silver Tone Fitness : Wooden Door, Glazed Door Window;Switch Type : NO;Operating Distance : 30-40mm Rated Current : 500mA;Rated Power : 10W;Voltage : 100V Size : 47 x 20x 10mm 1.9" x 0.8" x 0.4"(L*W*H);Mounting Hole Dia. : 4mm/ 0.16";Cable Length : 33cm / 13" Material (external) : Metal;Weight : 109g;Package Content : 1 Set Door Magnetic Switch